Apparatus for lowering material into and withdrawing material from wells



Jan. 1,1929 1,697,599

MASON G A. HU APPARATUS FOR LOWERING MATERI- INTO AND THDRAWING MATERIAL FRO ELLS Filed June 21. 1926 2 Sheets-Sheet 1 Jan. 1, 1929.

I e. A. HUMASON APPARATUS FOR LOWERING' MATERIAL INTO AND WITHDRAWING MATERIAL FROM WELLS 1 Filed June 21, 1926 2 Sheets -Sheet 2 Patented Jan. 1, 1929.

nterns star as gears nunason, or HOUSTON, EXAS) GRANVILLE isms,

APPARATUS FOR LOWERING MAT RIAL INTO Ann WITHDRAWING MATERIAL FROM Application filed June 21, 192 Serial Nb. 117,466;

This invention relates to new and useful improvements in anapparatus for lowering material into and withdrawing material from wells.

One objectof the invention is to provide an apparatus of the character described whereby a load of plastic cement may be I lowered into a well bore and discharged therein at a desired point. v

In carrying on well drilling operations it often becomes necessary to ,cementaround the-end of the pipe in the well bore to form a seal therearound to seal off a stratum of water thereabove orbelow the seal. In some cases a wellcasing islet down to the bottom of the bore and the cement, in plastic state, is then lowered to the bottom of the bore and discharged so that it will penetrate into the stratum around the lower end of the casing 3 and when the cement hardens it will form a vwater tight seal around the casing and hardened cement in the casing may be drilled through and the bore deepened. Also it sometimes happens/chat casing of a certain diameter is set in the bore and the bore is then reduced with a smaller casing, and it is desirable to form a seal around the joint and in such case the upper end of the lower casing splugged up with a woodenplug and immediately above the plug the larger cas ng is slitted and the load of cement is then discharged above the plug, while inplastic state, and will run through the slits and penetrate the surrounding stratum and form a seal around the joint to seal off the stratum of water. When this cement hard ensthe plug may be drilled through and work continued in the bore beneath.

The device herein-described has been designed for the purpose of diseharging ce- I ment, in plasticv state, in any desired place in the bore wherever there is a necessity for cementing in or around the casing .or pipe. I

The device may be also used as a for ba-iling'fluid from well bores.

l/Vith the above and other objects in view bailer this invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings,

v wherein ure2, and

Figuresfi and 7 arevertical sectional views V of the upper and lower ends respectively of the apparatus in discharging of the form to be suspended in a well bore by the use of a cable. j i

, Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures the numeral 1Lde'signates a tubular barrel whose lower end has a. plurality of lateral discharge openings, as 2. Fitted over the lower end of the ,barrel and slidable thereon there is a tubular sleeve 3 threaded into the lower end of which there is a spider 4 having the openings 5 and upstanding fromthe spider is a stem 6. Threaded into and closing thevlower end of the barrel there is the tubular nipple 7 whose upper end conical, asat 8. This nipple is substantial ly tubular with its upper end closed. l/Vithin the nipple 7 there is an annular guide 9 through which the stem 6 works and the stem has anenlarged head 10 adapted to engage the guide 9. The sleeve 3 has a plurality of discharge openings 11 and the nipple has oppositely disposed pintlesf12, 12, with rollers 13, 13,;on their outeriends which run in the position and gaging underneath the upper shoulder 14:.

shown in Figures 1 and 2, and the through the string ings In this position the openings 2 will be out of registration with the openings 11, as

barrel may then be filled with cementitious material, or cement, in plastic state, which will be retained therein. The apparatus may be attachedto astring of pipe,-as 16, by means of the collar 17 and thereby lowered into the bore. When the lower end of the sleeve 3 reaches the bottom ofthe bore, or an obstruce tion in thecasing, as for example, the wooden plug hereinbefore referred to, the downward movement of said sleeve will be stopped and the barrel will move on downwardly by gravity until the openings 2 register with the openings 11, as shown in Figure 7 and the plastic material in the barrel "will then be discharged through said registeringopenings at the desired place in the casing andfor the purposes hereinabove stated. As the barrel,

moves downwardly the nipple 7 and dogs will move downwardly with it relative to the stem 6 and said-dogs will engage underneath the lowermost shoulder let to thereafter hold the apparatus in openposi'iiion and during this downward movement the fluid in the sleeve 3, beneath the nipple will pass out through the openings 5. If desired a nip- '39 pic 18 may be screwed onto the upper end of the barrel and a cable 19 attachedthereto for lowering said apparatus into the bore as above described and insuch case the upper end of the barrel should be provided xv-ith a port 20 to prevent the formation of a vacuum WVhen used as a bailer the spring dogs 15 should be'dis'pensed with. When the device is then lowered into the bore and the bottom of the sleeve 3 reaches the bottom of the bore the barrel will move on down until the openings 2 and 11 register, as indicated in Figures 6 and 7 The water in the bore will enter through said'registering oaenings and'rise in the barrel to the level o the water in the bore and when the barrel is pulled upwardly,

16, or cable 19, said open- 2 will be carried out of registration with openings 11 and the" water will be trapped the in the barrel and may be withdrawn to the surface of the ground when the apparatus is withdrawn. 7

What I claim is 1. An apparatus of the character described'including a barrel having a lateral discharge port, a closure normally closing said port, said closure being movable lengthwise with respect to said barrel to, open the port, means preventing the detachment of said closure from sa-id'barrel and means for locking said'closure in open position, said locking means including a rod anchored to the closure, a nip-pie in the closure anchored to the barrel, said rod and nipple being provided, one with a dog and the other with means adapted to be engaged by said dog.

ZYAn apparatus oi the character described including .a barrel whose lower end is closed, said barrel having a lateral discharge opening, a sleeve associated with the barrel and having a lateral discharge opening,-each of said members closing the openol the other when the barrel is in upper position relative to the sleeve, said barrel being movable into lower position relative to the sleeve to bring said openings into registration, a nipple within the sleeve and anchored to the barrel,a arod anchored to the sleeve and extending axially through said nipple, said rod and nipple being provided one with a spring dog and the Other'uith shoulders with which the dog is adapted to engage. v i e g An; apparatus of the character described including a barrel whose lower end is closed, said barrel having a lateral discharge opening, a sleeve associated with the barrel and having a lateral discharge opening, each of said members closing the opening o'fithe' other when the barrel is in upper position relative to the sleeve, said barrel being movable into lower position relative to the sleeve to bring said openings into registration and a locking device adapted to permit such movement but to prevent the relative movement of said sleeve and barrel in the other direction, said locking device including a nipple within the sleeve, and anchored to the barrel, means tor anchoring the nipple against rotation relative tothe sleeve, a rod anchored to the sleeve and extending axially through said nipple, means for preventing the detachment of the rod fromthe nipple, said rod and nipple being provided, one with a dog and the other with means adapted to be engaged by said dog.

In testimony whereof I have signed my name to this specification. I g

. GRANVILLE I A. HUMASON.

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